Modular canopy structures that can be fitted with a retractable roof, production methods, assembly methods and corresponding uses

ABSTRACT

The application relates to a canvas comprising:
         members of a first type, said members being inserted into the canvas and comprising, on each of their ends, a means of sliding inserted into a structure, the members having a sliding device that can modify the length of the members during the sliding,   members of a second type which are inserted into the canvas, said members being flexible so as to allow formation of a flow curve,   two attachment members to be inserted into the canvas and located on the ends of the canvas, said members comprising a device allowing the canvas to be maintained in the deployed state,
 
the members of the first and second type being alternately arranged in parallel when they are inserted in the canvas, so as to form an “accordion” configuration.
       

     The application also includes modular structures, means of attachment as well as assemblies thereof.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present patent application claims priority of the Canadian patentapplication no. 2,920,207 file on Feb. 4, 2016, which is incorporated byreference in its entirety.

FIELD OF THE INVENTION

This invention relates to a modular structure consisting of a smallnumber of structural unit elements, each of the structural unit elementsis comprised of at least one longitudinal groove with a similar profile,but potentially of different lengths. The modular structure isself-supporting or can be partially supported by the support of asupporting wall. This modular structure can be equipped with a foldingroof to create a cover such as a canopy or pergola.

The present invention also relates to a unitary structural elementhaving a particular profile ensuring multifunctionality and allowing theeasy addition of other functionalities. This element, potentially ofdifferent lengths, allows creation of a modular and multifunctionalstructure, with the option of being completely self-supporting.

The invention also relates to a canvas for shade and protection againstrain, with a particular form and configuration, which can be installedon a frame-type structure. The canvas is distinctive because of itsparticular shape, which is characterized by an arrangement of pleats andslopes reminiscent of an accordion.

The invention is also comprised of the modular structure of theinvention furnished with at least one canvas of the invention.

The invention also consists of an absorption device allowing the smoothopening/closing of a canvas in a frame, when connected in a frame withlateral and interior grooves on at least two parallel sides of theframe.

The invention is also related to a modular structural assemblycomprising at least two modular structures according to the inventionand to a modular assembly of canopies comprising a modular assembly ofcanopies comprising at least two modular structures of the invention ofwhich at least one of the modular structures includes a canvas.

The present invention also relates to a semi-automatic tension systemfor folded canvases, in particular for canvases of the type of theinvention.

The present invention also relates to multifunctional fasteners whichallow different removable accessories to be attached to one of thegrooves of the modular structure.

The present invention also involves the methods to manufacture at leastone of the unit elements of the invention, at least one of the modularstructures of the invention, as well as the methods to manufacture atleast one of the modular assemblies of the invention.

This invention also relates to the methods to assemble the modularstructures of the invention equipped with a retractable ornon-retractable canvas, as well as the methods to use the modularassemblies of the invention equipped with a retractable ornon-retractable canvas.

The invention also relates to the uses of modular structures and modularassemblies of the invention, and in particular their use in the fieldsof temporary and permanent covers, decorative or for weather protection,garden shelters, pergola, gazebo, canopies, greenhouses, spa covers,removal spa covers, on frames, solarium, sun covers, rain covers, snowcovers, sheds, outdoor kitchens, presentation kiosks, electric generatortents equipped with canvas comprising photoelectric cells, and survivaltents in particular for disaster areas and for the army.

PRIOR ART

EP 2565342 describes a canopy which includes a canvas with a pluralityof folds (4) substantially parallel that can be moved along a slidedirection (Y) substantially orthogonal to the extension direction (X) ofthe folds (4), between at least one retracted position (A), in which thefolds (4) are located near each other, and at least one extendedposition (B), in which the folds (4) are at least partially extendedabove the area to be covered (5). Each of the folds (4) is delimited byat least one bottom fold (6) and by at least two first folds (7) betweenwhich one drain channel (9) is defined which is oriented transversely tothe slide direction (Y) of the canvas (3) and provided with at least oneslope toward a lateral side (3′) of the canvas (3). The awning includesat least two pairs of tie rods (10′, 10″), including an upper part (10′)and a lower (10″ tie rod), attached at their ends to the awning supportstructure (2). The tie rods (10′, 10″), are preferably substantiallyextended in parallel and arranged one above the other in the slidedirection (Y) of the canvas (3) at its side edges (3′). These areconnected through sliding with the lateral ends of the first folds (7)with the upper connecting rods (10′) and with the lateral ends of thebottom folds (6) with the lower tie rods (10″). The tie rods (10′ and10″) are spaced apart, when the cloth (3) is in a collected position(A), to a greater amount than when the cloth (3) is deployed (B) by anaverage distance creating elastic tension of locations (4) of the canvasin the said extended position (B).

AT 13584 describes an awning (15) with a membrane (16) that can be movedbetween a surface awning vault position (U) and a storage position (A)at least partially folded in one movement direction (B). It can bemoved, with a guide mechanism (17), comprising upper guide rails (18)and upper tension elements (27) and lower tension elements (28), inwhich the upper tension elements (27) are connected at the two endsequipped with an upper slide (20) that is mounted along one of the upperguide rails (18).

EP 2 284 330 describes a folding awning (1) comprising at least one pairof cross members (5a, 5b), being movable along at least one pair ofguides (4) between a first, gathered, position and a second, extended,position, and a canvas (6) extending between said pair of cross members(5a, 5b) and secured thereto, said canvas comprising at least onedrainage section (11a, 5b) in which the length of said canvas (6) in aplane (XY) transverse to the pair of cross members (5a, 5b) is greaterthan the distance between said cross members (5a, 5b) so as to form adrainage channel (12) between the cross members (5a, 5b), and the awning(1) comprising, at least one means of tensioning (20) secured to saidcanvas (6) at one or more securing points (21) in the region of saiddrainage channel (12), so as to place the canvas (6) under tension in atleast the second, extended, position.

FR 2 840 339 describes a folding modular structure for a cover such as aterrace or pergola. The modular structure consists of a sealed tarpaulin(1) on a support frame (2), extended according to its width (2a) with aconstant length (2b). The tarpaulin is folded into pleats (1a-1b) toprovide alternative slopes along the width so as to allow foralternating folding of the pleats and the dispersal of rainwater on eachside of the frame width, which is placed horizontally. The tarpaulin haseyelets (4) through which pass support cables (3) held along the lengthof the frame allowing the tarpaulin to slide. Mountings (5a) areconnected to a slide (5b) on each of the widths (2a), so that thetarpaulin slides along the cables (3) and the slides (5b) allow it to bespread out

There was a need for a modular shelter structure, in particular one thatis foldable and lacks at least one of the shortcomings of structures ofprior art

SUMMARY OF THE INVENTION

One object is an accordion-type folding canvas comprising:

-   -   a plurality of members of a first type, said members to be        inserted into said canvas, said members of the first type        comprising, at each end, a means for sliding or moving to be        inserted into a structure. The said members of said first type        having a sliding device so as to be able to modify their length        during said sliding or movement, in this way preventing        blocking.    -   a plurality of members of a second type, said members to be        inserted into said canvas, said members of the second type being        flexible so as to allow formation of a flow curve when said        canvas is extended.    -   two attachment members, for inserting into the canvas and        located on the ends of the canvas, said attachment members        comprising a device allowing the canvas to be maintained in a        deployed position,

said members of the first type and second type to be alternatelyarranged, in parallel, when they are inserted in the canvas, so as toform an “accordion” configuration, when the canvas is in a folded orextended position, said attachment members replacing said members of thesecond type in alternation at said ends of the canvas.

Another object is an accordion-type folding canvas comprising:

-   -   a plurality of members of a first type, said members to be        inserted into said canvas, said members of the first type        comprising, at each end, a means of movement to be inserted into        a structure, the said members of said first type having a        sliding device so as to be able to modify their length during        said movement,    -   a plurality of members of a second type, said members to be        inserted into said canvas, said members of the second type being        flexible so as to allow formation of a flow curve,    -   two attachment members, to be inserted into said canvas and        located on the ends of the canvas, said attachment members being        attached in a fixed manner to a structure in order to maintain        said canvas in a deployed position, and

said members of the first and second types to be alternately arranged inparallel when they are inserted in the canvas, so as to form an“accordion” configuration.

Another object is a structure comprising:

-   -   a canvas; and    -   at least two support members, said support members each        comprising at least one groove, said groove to receive said        means of sliding or moving of said members of said first type of        said canvas in order to maintain said canvas and allow it to        move between a folded position and an extended position.

Another object is a structure comprising:

-   -   a canvas, as defined in the present application; and    -   at least two support members, said support members each        comprising at least one groove to receive said means of sliding        or moving of said members of the first type of said canvas in        order to maintain said canvas and allow it to move between a        folded position and an extended position.

Another object is a means of attachment comprising:

-   -   a screw which is generally rectangular comprising two rounded        corners at the ends of one diagonal and two right angle corners        at the ends of a second diagonal;    -   a support comprising a hole for a screw, said screw to be        screwed to said nut, passing through said support, so as to        attach the object between said support and said screw; and    -   a strip to be positioned between said screw and said support,        said strip comprising a hole for said screw, said strip being of        a size to prevent said support from rotating when said screw is        introduced into said support and into the nut

Another object is an assembly comprising:

-   -   at least one support member, one cross member and/or a vertical        rod described herein and    -   at least one means of attachment described herein, said nut to        be inserted in said groove of said support member, cross member        and/or vertical rod, between two edges on either side of an        opening in said groove, so as to attach the two edges between        said nut and said support when said screw is screwed into said        nut, said first diagonal of said nut being shorter than the        width of said groove, said second diagonal of said nut being        longer than the width of said groove.

BRIEF DESCRIPTION OF FIGURES

FIG. 1 represents a perspective view of a canopy device according to oneembodiment of the invention, with the canvas extended.

FIG. 2 represents the perspective view of the canopy device of FIG. 1with the canvas folded.

FIG. 3 represents the perspective view of the canopy device of FIG. 1without the canvas.

FIG. 4 represents the view of the face and underside of the canopydevice of FIG. 1 without the canvas.

FIG. 5 represents a perspective view of a modular assembly of theinvention system of the invention, consisting of 2 devices of theinvention, as represented in FIG. 1 and in adjacent mode and sharingsome elements of the structure.

FIG. 6A: represents a perspective view of a modular frame according toone embodiment of the invention, equipped with connectors at the cornersof the invention.

FIG. 6B: represents a perspective view of the modular frame of FIG. 6Aand equipped with corner connectors according to another embodiment ofthe invention.

FIG. 7: represents the view of the face and underside of the canopydevice of FIG. 4 with the canvas extended.

FIG. 8: represents the side view and the underside of the canopy deviceof FIG. 1 with the canvas extended.

FIG. 9: represents the view of the top and the perspective of the canopydevice of FIG. 8 with canvas.

FIG. 10: represents the view of the top and the perspective of thecanopy device of FIG. 8 with a taut canvas.

FIG. 11: represents a perspective view of a modular assembly of theinvention, consisting of 2 modular structures of the type represented inFIG. 1, and in adjacent mode and sharing some elements of the structureand with the 2 canvases extended.

FIG. 12: represents a detailed view of the tension mechanism of thecanvas and its elementary components in a perspective view according tothe embodiment of FIG. 9.

FIG. 13: represents a detailed view of the tension mechanism of thecanvas and its elementary components in a perspective view according tothe embodiment of FIG. 12 and with the lateral elements (44) playing therole of return springs (elastic) for semi-automatic closing of thecanvas.

FIG. 14: represents a detailed view of the first embodiment of themechanism of one of the components of the canvas according to FIG. 13and its lateral tension absorption device for the canvas.

FIG. 15: represents a detailed view of a second embodiment of themechanism of the canvas according to FIG. 13 and its lateral tensionabsorption device for the canvas. Representation of the fastening tube(47) at the canvas extremities. This is not a variant of FIG. 14.

FIG. 16A: represents an exploded view of the 3-dimensional connectiondevice according to the invention and the elements with which it will beconnected.

FIG. 16B: represents an exploded view of a 3-dimensional connectiondevice according to another embodiment for the invention and theelements with which it will be connected.

FIG. 17A: represents the detail of the exploded view of the3-dimensional connection device of FIG. 16A and the elements with whichit will be connected rods/elements which will make its connection.

FIG. 17B: represents the detail of the exploded view of the3-dimensional connection device of FIG. 16B and the elements with whichit will be connected rods/elements which will make its connection.

FIG. 18A: represents an exploded view of the 4-dimensional connectiondevice according to the invention and the elements with which it will beconnected.

FIG. 18B: represents an exploded view of a 4-dimensional connectiondevice according to another embodiment for the invention and theelements with which it will be connected.

FIG. 19A: represents an exploded view of the 5-dimensional connectiondevice according to the invention and the elements with which it will beconnected.

FIG. 19B: represents an exploded view of a 5-dimensional connectiondevice according to another embodiment for the invention and theelements with which it will be connected.

FIG. 20: represents a detailed view of the tension mechanism of thecanvas and its elementary components, in a perspective view, accordingto the embodiment of FIG. 12 and without the lateral elements (44) andwithout the tension mechanism.

FIG. 21: represents a perspective view of the detail of a canopy deviceaccording to one embodiment of the simplified structure and supported bya wall. Attachment to the ground using the same piece as the wallattachment is also shown.

FIG. 22: represents an interior, perspective view of one absorptionelement inserted in the groove of one of the structural elements, aswell as a detailed view, inverted and exploded, of the end of theabsorption element

FIG. 23: represents the partial view of the top (FIG. 23A), thethree-stage action of the guiding and absorption mechanism and withoutthe canvas. The view also represents the lateral absorption mechanism infolded mode (FIG. 23B) and in extended mode (FIG. 23C).

FIG. 24: represents a truncated side view (FIG. 24B), and truncatedperspective view (FIG. 24A) of the detail of the absorptionhead/attachment bar of the sides of the canvas to the side canopystructure in folded mode. Representation of the absorptionsystem/sliding casters which also act as fasteners between the structureand the canvas. Variant of the current system of absorption tubes thatuse a play between the caster and the screw which hold it in place,thereby allowing sliding of the caster.

FIG. 25: represents the detail of the absorption head/attachment bar ofthe sides of the canvas alone (FIG. 25A) and positioned in the canopystructure (FIG. 25B) in folded mode. Variant of the current system whichuses a different, larger caster which provides play between the form andthe caster which will absorb twisting.

FIG. 26: represents a means of fastening (rapid attachment system)according to a embodiment of the invention in its assembled mode (FIG.26A) and its dismantled mode and exploded view (FIG. 26B).

FIG. 27: represents a top view of a fastener according to the inventionpositioned with the edges of the groove of a profile of the inventionwith 4 grooves, one per face (FIG. 27A) and represents the same fastenerlocked to the same sides of the form groove (FIG. 27B).

FIG. 28: represents a perspective view of the accordion-type canvasaccording to one embodiment of the invention and the detail of one ofthe central folds of the canvas.

FIG. 29: represents a sectional view and top view of the detail of theprofile according to 6 different embodiments.

FIG. 30: represents a top view and detail view of the profile withhidden profiles shown in dotted lines used to illustrate a preferentialmethod of the invention in the description of the invention.

FIG. 31: represents a perspective view of a canopy device according toanother embodiment of the invention, in which the latter is providedwith a screen.

FIG. 32: represents a side view (FIG. 32A) of an accordion-type canvasaccording to one embodiment of the invention and a detail view (FIG.32B) of one of the central folds of the canvas.

FIG. 33: represents a perspective view of the accordion-type canvasaccording to one embodiment of the invention and the detail of one ofthe central folds of the canvas.

FIG. 34: represents a view of the face of a screw (FIG. 34A) which is tobe inserted in the groove of the profile as well as a sectional and topview of the detail of the profile (FIG. 34B) according to one embodimentof the invention.

FIG. 35: represents a side view and perspective view (FIG. 35A) andexploded view (FIG. 35B) of a means of attachment comprising a removablenotch, according to another embodiment of the invention.

FIG. 36: represents a side view and perspective view of the means ofattachment comprising a removable notch according to FIG. 35 whichretains an attachment member (snaphook) of a canvas.

FIG. 37: represents a frontal view and detail view of the canvas kept inextended position through the means of the attachment of FIG. 35.

FIG. 38: represents a top view and perspective view of a flat canvasheld in a taut position by an attachment mechanism comprising an eyeletaccording to another embodiment of the invention.

GENERAL DEFINITION OF THE INVENTION

Introduction

The invention is a structure consisting of a minimized number of unitelements constituting the structure after assembly. The constitutingunit elements, which have the advantage of a constant rectangular orsquare section along their length, include in one of its sides at leastone interior groove which provides the invention with a plurality ofoptions and/or functionalities that connects with at least one of thefaces of the unit element. The structure of the invention is modular,flexible, self-supporting or can be attached to a support, such as awall.

The modularity of the structure allows for various configurations andpositions.

Corner connectors, in particular in the form of a cross and/or a T allowthe structure to have different sizes and shapes. Through theoriginality of their structure, these corner connectors, potentiallywith decorative and/or protective elements which are added to them, alsoconstitute an object of the invention.

The grooves located in the unit elements allow for positioning of thedifferent decorative and/or functional options/accessories, inparticular options/accessories of a type that can be retrofitted, easilyor not.

The structure of the invention is easy to install, requires nospecialized labour and can be installed in a few minutes.

The corner connectors have the advantage of being structurallyreinforced and do not necessarily require the addition of additionalstays, particularly to reinforce the structure.

Several types of roofs and curtain walls and/or privacy panels can beeasily installed on the modular structure of the invention, whether theyare roofs, walls or curtains that are permanent rigid types, flexible orretractable, manual or automatic.

Opening and/or closing the retractable roof can, for example, be done byturning a crank, pulling a cable or by hand.

In the case of a roof positioned and connected with the structure, it ispossible to add to the structure an automatic roof closing and/oropening system, according to the invention, e.g. by cable andcounterweight, elastic spring, rubber or bent fibreglass and canvasdesign, whether hidden by the structure or not, or automatically ormanually locking at one of the 2 ends or both.

The curve of the roof discharges water from each side or from just oneside. A water-collection gutter can be installed optionally. The roof,whether retractable or not, can be dismantled in several sections forcompact or maximum packing, also being an original aspect of theinvention. The caster system, with or without ball bearings, slides thelength of the structural groove.

A side slide system which can be disassembled, provided with rigidsupport rods, which can fit together or not, also part of the invention,prevents the system from getting jammed during opening and closingmovements. The absorption by the rods and/or screws and/or tubes can beoperated in combination or independently to correct the trajectory ofthe canvas.

The adjusted or permissive casters prevent the rod from becoming lockedin the groove. The guide cable, runner or rigid rod ensures a functionaland/or aesthetic straight line of the canvas.

A first object of the invention consists of a self-supporting structureand by unitary structural elements of the base structure.

The self-supporting structure is comprised of profiles, created, e.g.through aluminum extrusion. The self-supporting structure can in anadvantageous embodiment of the invention use only one type of profile tocreate its entire structure, this profile can potentially vary in termsof its length to accommodate the use desired (feet, beams,cross-elements, reinforcements, supports) The profile uses e.g. a squareor rectangular form and has the advantage of a groove, preferablycentral on each of the large side faces of the profile.

The groove acts as a support element that can receive the options andassemblies anticipated as additions to the structure, being developedspecifically for this use. The groove used for an example as illustratedin the preferred embodiment below, a T-insertion principle which allowsthe hardware developed as part of the project to serve as support

Nevertheless, the necessary use of this groove does not limit the shape,different principles of grooves can be used in the same way with adifferent profile.

The structure is assembled with a corner principle (connectors) whichserve as attachment point between the main profiles of the structure.These original connectors also constitute an aspect of the invention.This assembly (mechanical-welding assembly of the connectors) supportsthe horizontal beams of the structure while fitting into the feet of thestructure. Assembly of the connector has the advantage of being hiddenby an ornamental cap which also maintains aesthetics, e.g. cubic, of thestructure.

The connector, which contains at least as many rods as directions to beconnected with another structural element according to a preferredembodiment is assembled so as to orient its rods in the X, Y and Z axialdirections. The rods are then inserted in the centre of the main profileof the structure. According to a preferred embodiment, insertions drawnthrough each of the rods have the advantage of allowing mechanicalassembly of the profiles to the connectors. Different variants ofconnectors are also part of the invention, invented to allow connectionof several modular structures of the invention which would have theadvantage of using the same support point (foot). Versions with 3, 4 and5 branches have been developed to allow multiple arrangements, calledassemblies with regard to this invention.

The modular structure of the invention, also called principle structureon which options/accessories are grafted, comprises a very limitedquantity of parts, which facilitates inventory management andmanufacture. The profile and connectors were developed so as to allow asmany arrangements as possible without any modification to the parts, nocustomized or specialized manufacture is required for a certain type ofstructural arrangement. The project is entirely modular.

A second aspect of the invention consists of a canvas for shade andprotection against rain which can be installed as an option on thestructure. The canvas is distinctive because of its particular shapewhich is characterized by an arrangement of pleats and slopesreminiscent of an accordion.

Structured, e.g. by tubes with sliding casters that are inserted in theupper tips of the accordion as well as by flexible rods that areinstalled in the lower tips, the canvas offers some rigidity andconsistency in shape. The sliding aspect of the canvas allows it to beopened and closed, providing flexibility of use.

In a preferred embodiment, bottom casters have the advantage of slidingwithin the groove of the main extrusion profile to provide itsopening/closing movement The flexible rods inserted in the lower tips ofthe canvas have guide heads, preferably of eyelet type which slide on ataut cable so as to guide the canvas and avoid twisting as much aspossible during movement The flexible rods inserted in the lower tipsalso serve to structure the canvas with a flow curve that guides waterto the sides of the structure to prevent accumulation and ensure thestructure is completely waterproof.

Following an advantageous embodiment, the canvas can be entirelyassembled and dismantled, and following an advantageous method assembledby inserting tubes and rods in pockets provided for this, to then beslid into the structure which requires no dismantling. Since the projectis based on a modular principle, options must be installable afterassembly of the structure. The sliding principle of the canvas couldfunction following other cable principles, such as weighted, or a cranksystem and benefit from a gutter system to collect water that flowsthanks to the flow curve.

A third object of the invention consists of a self-supporting ornon-self-supporting modular structure according to object 1 of theinvention equipped with at least one retractable or non-retractablecanvas and by a self-supporting structure according to object 1 of theinvention and equipped with at least one canvas according to object 2 ofthe invention.

A fourth object of the invention consists of an absorption devicepermitting the smooth opening/closing of a canvas, an “anti-twist”device. This device offers a twist margin that will not block sliding ofthe guide elements in the lateral parallel grooves of the upper frame ofthe modular structure. For example, if the guide and sliding elementsare casters below, blockage of the casters is avoided when the canvashas been operated in an uneven manner. The absorption principle ischaracterized by sliding tubes at the ends of the bottom tubes on whichcasters are installed, the latter permit the necessary extension of thesliding tubes during twisting to avoid any blockage. The absorptiondevice is advantageously installed on the canvas prior to installationon the structure. The advantage of the device is in its simplicity ofassembly, limited number of parts and autonomous function which does notrequire particular maintenance or use. Use of the product is intuitivefor the user with simple devices for use.

This device can also be based on a different principle, such as longscrews that allow side movement of the casters and which would notrequire a sliding tube. According to another embodiment of theinvention, use of larger casters offering more play once installed inthe groove of the main profile.

A fifth object of this invention is a modular structural assembly and amodular assembly of canopies.

The invented principle of modularity allows creation of differentvariants of the cover.

The concept starts with a base structure which is the ALFA composition.This composition of tubular and connector length is the basis of theshape and functionality of the product This composition of parts cancreate infinite lengths and different bi- and tri-directional geometricforms. All that is needed to obtain the desired final product, is to addthe desired options. Each connector piece must advantageously beinstalled in a homogeneous fashion, i.e. the connectors of the inventionmust preferably be attached with the same type of nuts, but especiallyadvantageously at the same level. For example, the foot of a gazebowhich is attached to the ground can also be installed on the horizontalbeam and attached to a wall. For example, a foot serving as groundanchor can also be used instead of two of the four corner connectors,being inserted at the ends of the horizontal beams and then anchored ina vertical support (such as a wall). Some connectors of different shapescan be installed at any end of the structure and therefore extend thestructure itself in several different directions.

Each option/accessory designed must be easily installed on the modularstructure both with the initial installation and as a retrofit Thismeans, allow in the context of the invention, installation of a newoption or a new type of roof on the base structure without altering thecomponents of the structure and even without taking it apart.

Each option must be therefore conceived in this way. Moreover, eachoption must be able to be shipped by courier and therefore must bemaximized for shipping to the consumer. The product can be installedtemporarily since it is very quick to install, or permanently since theproduct is of commercial quality.

A sixth object of this invention consists of tension mechanisms forretractable canvases.

The canvas is comprised of a waterproof or non-waterproof fabric, withaluminum rods as support, and fibreglass rods providing shape and bodyto the canvas. The aluminum tubes have casters at the ends and roll inthe tube cavity. Opening of the canvas and its closing can be done inseveral ways.

Side curtains or side screens: to block the view or the wind or simplyfor aesthetics. Can be opened manually, automatically with a remote, orwith a press button or controlled by a cell phone or motor.

Manual: by hand, detach the canvas and manually slide the canvas. Withthe anti-blocking system, the support rods do not have to be perfectlyaligned in parallel. The rods will still slide.

Opening and closing by pulling or rolling a cable: one or several cablescan be installed in the structure and activated using a counterweight orspring hidden or not in the structure. The action of pulling or rollinga cord can both open and close in the 2 cases.

A seventh object in this invention consists of multifunctional fasteners

With the goal of adapting several options to the structure, hardware wasdeveloped specially for the structure. The attachment system is designedto adapt to all attachment and installation needs and defines the shapeof the principal profile of the structure. In the case of theretractable canvas, the fasteners act as supports for the guide cabletension system.

Fasteners consist of a right-angled extrusion profile which is installedon the outside of the groove of the principal profile and act as asupport for the options. This support is maintained by a T-nut which isinserted into the groove and, once the assembly is screwed, makes aone-quarter turn to become blocked in the groove, providing pressurewhich fixes it in place while the screw is tightened. The advantagegained by this principle is the possibility of inserting fasteners intothe groove of the structure without the latter being disassembled. Thefastener is also equipped with an anti-rotation strip which allows it tostay parallel to the groove at all times, thereby avoiding sliding fromstarting.

Projected variants:

Nut without rotation which must be inserted by the ends of the structureprofiles

Permanent hardware requiring drilling in structure profiles

Motorization: with the help of a motor, closing or opening of the roofand/or side curtains can be done by a manual switch, remote control orcell phone applications.

An eighth object of this invention consists of all processes tomanufacture at least one of objects 1 to 7 of the invention aspreviously defined. Among these processes, in particular those utilizingknown techniques of prior art, such as riveting, screwing, connecting,gluing, welding, clipping, etc.

A ninth object of this invention consists of the use of objects 1 to 7of the invention as previously defined.

As examples, but not limited to, the use of object 1 as: temporaryshelters, garden shelters, pergola, gazebo, greenhouse, spa shelters,removable spa cover, with structure, solarium, sun shades, rainshelters, snow shelters, shed, outdoor kitchen, presentation kiosk,electric generator tent equipped with canvas comprising photoelectriccells, and survival tent in particular for the army.

Advantages of Objects 1 to 7 of the Invention

Advantages noted with regard to previous art are the notablesimplification of the system and mechanisms involved, in particular withregard to the following points:

-   -   assembly simplified to the point that anyone can rapidly        assemble it without problems;    -   quick dismantling;    -   no specialized labour required;    -   the structure can be shipped by courier and is very compact;    -   the structure can be ordered in an infinite number of        configurations;    -   the structure can be modified through retrofitting even several        years after set-up    -   the system can evolve over time by changing certain components;    -   users can change the parts themselves and make repairs as        needed;    -   for the same model chosen by a client, dozens of versions are        possible, e.g. a rigid roof for which the run-off slope can be        chosen, components of side walls that can be transformed into        handrails;    -   side grooves can be used for several options, such as a lighting        system with lights, water spray system, for gutters, to hide        wires, provide a guide for a slide system;    -   universal fasteners, combined with the structure grooves allow        for the solid attachment of any kind of product, part or other        structure, they are used to solidify the structure, hold cables,        install custom components;    -   depending on the options chosen, the structure can completely        change style, e.g. from contemporary to Victorian, with the same        base structure;    -   resist very strong winds, perfect for the seashore;    -   winter preparation of the product is very quick, taking less        than 15 minutes;    -   can handle intensive use such as commercial type and is refined        enough for the residential market; and    -   depending on options, can tolerate rain, glaze ice, and snow        loads.

For example, said attachment members replace said members of the firsttype or second type in alternation at said ends of the canvas.

For example, said members of said first type are upper members and saidmembers of said second type are lower members.

For example, said sliding device includes two cylinders, inserted oneinto the other.

For example, said sliding device includes two cylinders, inserted oneinto the other so that, if one end of one of said members of the firsttype is moved in an uneven fashion at its opposite end in relation tosaid structure during movement of the canvas in relation to saidstructure, said member of the first type will get longer thanks to saidsliding device, thereby preventing blockage during movement of saidcanvas.

For example, said means of sliding or movement include casters.

For example, said members of said second type are connected together byat least one guide, to one of said ends of said members of second type,at least one of said guides being arranged in a fashion generallyperpendicular to said members of said second type.

For example, said members of said second type are connected together bytwo guides, one at each of said ends of said members of second secondtype, said guides being arranged in a fashion generally perpendicular tosaid members of said second type.

For example, said guides are cables inserted into eyelets located onsaid ends of said members of said second type.

For example, said support members comprise two support members connectedtogether by two cross members in a fashion generally parallel to saidmembers of the first and second type, said support members and saidcross members forming a frame that maintains the canvas.

For example, the structure also includes at least two vertical rodsallowing retention of said frame and said canvas at a desired height.

For example, said cross members each include at least one groove.

For example, said vertical rods each include at least one groove.

For example, at least two of said support members are interchangeablewith said cross members.

For example, at least two of said support members are interchangeablewith said cross members or with at least two of said vertical rods.

For example, said cross members are interchangeable with at least two ofsaid vertical rods.

For example, said support members, said cross members and said verticalrods are to be connected together using connectors, said connectorshaving branches to be inserted into cavities of said support members,said cross members and/or said vertical rods, said connectors to belocated at the corners of said frame and to be sized so that thebranches are hidden inside said support members, said cross membersand/or said vertical rods when they are inserted into them.

For example, said connectors have three branches, one branch beingpositioned vertically and two branches being positioned horizontally,and said horizontal branches forming 90-degree angles between them andwith said vertical branch.

For example, said connectors have four branches, one branch beingpositioned vertically and three branches being positioned horizontally,said horizontal branches forming 90-degree angles between them and withsaid vertical branch.

For example, said connectors have five branches, one branch beingpositioned vertically and four branches being positioned horizontally,said horizontal branches forming 90-degree angles between them and withsaid vertical branch.

For example, the structure includes a tension mechanism comprising asystem of cables, pulleys and counterweights to permit said movementbetween a folded position and an extended position.

For example, said nut includes at least one surface allowing engagementby friction with an object to be fastened by said means of attachment.

For example, said support includes at least one surface allowingengagement by friction with said object to be attached by said means ofattachment.

For example, said support includes an eyelet to receive a couplingelement

For example, said coupling element is a hook, a screw and a nut or asnaphook.

For example, said means includes, at least one removable notch to holdand support an object and to be attached to said support

For example, said support defines a notch to hold and support an object

For example, said strip includes at least one central part and at leastone fin sized to be next to a lateral part of said support.

For example, said strip includes at least one central part and two finslocated at two opposite ends of said central part, said fins forming a90-degree angle with said central part and sized to be next to a lateralpart of said support.

For example, said support has an L shape.

For example, said first diagonal is shorter than said second diagonal.

For example, said nut of said means of attachment is sized to allow a 90degree rotation in only one direction in said groove when the screw isinserted into the nut and the nut is inserted into said groove.

For example, the assembly also includes a canvas described herein

For example, the assembly is also comprising a canvas described herein,said canvas to be maintained in said extended position in said framethrough said device to be attached in a removable fashion to at leastone means of fastening to be inserted into said groove of said supportand cross members.

Another object is a modular structure comprising an upper part,self-supporting and in the shape of a rectangular frame formed of 4structural unit elements joined 2 by 2 at their end by a cornerconnector, said upper part being supported by at least 2 feet,preferably by at least 4 feet, each of the feet secured by the connectorof the corner of the frame of the upper part, each of the 4 elements andthe rectangular frame having a rectangular orthogonal section and atleast 2 rods forming the rectangular frame and substantially parallel toeach other, having a slide groove on at least one part of the faceopposite the face of the second rod and facing the interior of therectangular frame.

For example, at least one of the structural unit elements includes agroove on at least one face, preferably on at least 2 faces,advantageously on at least 3 faces and more advantageously on at least 4faces.

For example, the structure includes a rigid or non-rigid canvas, foldingor not, connected to at least 2 of the structural unit elements of themodular structure.

For example, the structure comprises:

-   -   a) a number n of identical central unit elements, each of the        central elements consisting of 2 identical sheets in a        substantially rectangular form with 4 ridges, 3 of the ridges        being straight and one of them substantially concave and        comprising the connecting with a canvas of another adjacent        central unit element, of identical length, accomplished by a        summit and connecting with an adjacent element at the base with        a V-shaped section and of variable size on the length of the        element having a concave shape at the summit, each of the 2        points of the concave ridge being connected with a steel cable        on the sides and to its summit by a metallic guide ring; the        non-concave base of a canvas connected with the base of an        adjacent canvas by a rod, each end of this rod penetrating into        the internal groove configured for it to slide into;    -   b) 2 end elements adjacent to the rectangular frame each        consisting of a rectangular canvas, one of the sides being this        rectangular canvas connected at the ridge of the adjacent        central element and the other ridge connected at 2 support feet;    -   c) the bars being connected with the slide groove so as to have        a bit of play to avoid blocking and to slide into the groove and        guide the canvas when it is moved (manually);    -   d) preferably, the guide cable being connected with 2 support        feet and at a height located near the support point        (self-adhesive type cable fastener system).

Another object is a modular structure consisting of a small number ofstructural unit elements comprising at least one longitudinal groove,each of the structural unit elements having a profile, preferablysimilar, but potentially of different lengths.

For example, the modular structures are self-supporting or can bepartially supported by a supporting wall type of support.

For example, the modular structure is equipped with a folding roof tocreate a cover such as a canopy or pergola.

Another object is a unitary structural element with a particular profileensuring multifunctionality and allowing the easy addition of otherfunctionalities; this unit element, potentially of different lengths,allows creation of a modular and multifunctional structure.

Another object is a canvas for shade and protection against rain, with aparticular form and configuration, which can be installed on aframe-type structure, said canvas being characterized by an arrangementof pleats and slopes reminiscent of the accordion principle.

For example, the modular structure is equipped with at least one canvasdescribed herein.

Another object is an absorption device allowing the smoothopening/closing of a canvas in a rectangular frame, when connected tosaid rectangular frame having lateral and interior grooves on at leasttwo parallel sides of the rectangular frame.

Another object is a rectangular frame supplied with an absorption devicedescribed herein.

Another object is a semi-automatic tension mechanism for canvasescomprising a system of cables and pulleys or springs/elastics that applya closing force.

Another object is a modular structure and a modular structure forcanopies, comprising an absorption and/of guidance device describedherein and/or a semi-automatic tension mechanism described herein and/ora means of attachment described herein.

Another object is a modular structure assembly and a modular assembly ofcanopies, comprising an absorption device and/of described herein and/ora semi-automatic tension mechanism described herein and/or a means ofattachment described herein.

Another object is a process allowing manufacture of at least one of themodular structures of the invention described herein, as well as theprocesses to manufacture at least one of the modular assembliesdescribed herein and at least one modular element described herein.

Another object is a use method of modular structures described herein,provided with a retractable or non-retractable canvas.

Another object is a use method of modular structures described herein,or use method of modular assemblies described herein, said structuresand said modular assemblies provided with a retractable ornon-retractable canvas.

Another object is a use method of modular structures described herein ora use method of modular assemblies described herein, and in particulartheir use in the fields of temporary shelters, garden shelters, pergola,gazebo, greenhouse, spa shelters, removable spa cover, with structure,solarium, sun shades, rain shelters, snow shelters, shed, outdoorkitchen, presentation kiosk, electric generator tent equipped withcanvas comprising photoelectric cells, and survival tent in particularfor disaster areas and by the army.

For example, the use is as a shelter against bad weather and as acanopy.

Another object is a modular structure comprising an upper part,self-supporting and in the shape of a rectangular frame formed of 4structural unit elements joined 2 by 2 at their end by a cornerconnector, said upper part being supported by at least 2 feet,preferably by at least 4 feet, each of the feet being connected by theconnector of the corner of the frame of the upper part, each of the 4elements and the rectangular frame having a rectangular orthogonalsection and at least 2 rods forming the rectangular frame andsubstantially parallel to each other, having a slide groove on at leastone part of the face opposite the face of the second rod and facing theinterior of the rectangular frame.

For example, at least one of the structural unit elements of the modularstructure includes a groove on at least one face, preferably on at least2 faces, advantageously on at least 3 faces and more advantageously onat least 4 faces.

Another object is a manufacturing process of a canvas described herein.

Another object is a manufacturing process of a support member, a crossmember or a vertical rod described herein.

For example, said support member, said cross member and/or said verticalrod are formed by extrusion.

For example, said support member, said cross member and/or said verticalrod are formed by aluminum extrusion.

Another object is a manufacturing process of a nut, a support member, astrip or a screw described herein.

For example, said nut, said support, said strip and/or said screw areformed by extrusion.

For example, said nut, said support, said strip and/or said screw areformed by aluminum and/or plastic extrusion.

Another object is an assembly process of the structure described herein,comprising:

-   -   inserting said members of a first type, of the second type and        fasteners in said canvas;    -   fastening said means of sliding or moving to each end of said        members of a first type;    -   inserting each of said means of sliding or moving in said groove        of said two support members on both sides of said canvas;    -   connecting said support members to said cross members in order        to form said frame; and    -   connecting said support to said vertical rods,

in which said support members, said cross members and said vertical rodsare connected together inserting said branches of said connector in saidcavities of said support members, said cross members and said verticalrods.

For example, the assembly process also includes attaching the supportfastener described herein, to said support member, cross member orvertical rod, comprising:

-   -   inserting said nut in said groove of said cross bar or said        vertical rod, between said edges on either side of said opening        of said groove, and    -   attaching said support by screwing said screw through said        strip, said support and said nut until said nut rotates 90        degrees and is locked in said groove so as to tighten said edges        between said nut and said support.

For example, the assembly process includes attaching a coupling elementdescribed in the present application.

For example the assembly process includes the implementation of theassembly by known assembly means/methods.

For example, means of assembly are chosen among packing, screwing,riveting, welding and gluing.

DESCRIPTION OF A PREFERENTIAL EMBODIMENT OF THE INVENTION

The following embodiment is given only as a matter of examplificationonly and does not constitute any sort of limitation to the invention inits generalities.

The parts of the structure and its mechanisms of action are identifiedby number and listed in the following correspondence table:

Number Parts Description 3 Fastener with notch Fastener comprising anotch to receive a canvas attachment member 4 Washer Nut washer tosupport pressure from a screw 5 Notch Notch to hold and support anobject 6 Side screens Side screens that provide shade, a windbreak oraesthetics 7 Canvas tension mechanism Tension mechanism for the canvasreturn 8 Folds Folds of the canvas that provide the accordion aspect 9Slopes Slopes generated by the folds that define the accordion aspect 10Return cable Return cable that applies a closure force on the canvas 11Wall Attachment wall for anchoring against the structure 12 Upper tips(canvas) Upper points of the canvas structured by sliding tubes 13 Lowertips (canvas) Lower points of the canvas structured by flexible rods 14Horizontal beams Principle extrusion of the structure used as horizontalbeams (support members and cross members) 15 Feet of the structurePrincipal extrusion of the structure used as footing (vertical rod) 16Centre of profile Square-shaped profile located in the centre of theprincipal profile in which are placed the connector rods for assembly ofthe structure 17 Groove of the profile Groove present on each face ofthe structure profile. It is used as support for the fasteners andfunctions on the principle of “T” insertions. 18 Nut (T-nut) Rectangularnut with two chamfers that allow a ¼″ rotation once inserted in theprincipal profile of the structure. It is this nut that applies thetightening force for that keeps the fastener in place during screwing.19 Right angle support fastener Aluminum extrusion acting assupport/hook on which is assembled several of the options andaccessories 20 Anti-rotation strip Aluminum strip which prevents forcesapplied to the fastener from causing rotation 21 Fastener Screw thattightens the fastener on the structure, holding it there due to crushingproduced by tightening 22 Fastener assembly Assembly of the fastenerused as accessory support on the structure 23 Structure Self-supportingstructure comprised of aluminum extrusion profiles 24 Taut top canvasTop of canvas held taut by a system of cables and which offersprotection from the sun 25 3-branch connector Three-branchmechanical-welding assembly that allows the structure to be assembled byacting as connector of the corners 26 4-branch connector Four-branchmechanical-welding assembly that allows the structure to be assembled byacting as connector of the corners 27 5-branch connector Five-branchmechanical-welding assembly that allows the structure to be assembled byacting as connector of the corners 28 Connector branch Extrusion profilecomprising the connectors 29 Connector cube Ornamental cubic finial thathides and protects the mechanical-welding assembly of corner connectors.30 Connector reinforcement rod Extrusion profile soldered into theconnector cube acting as reinforcement by insertion in the structureprofile 31 Threaded insertion Threaded insertions allowing connectors toreceive the structure assembly screws 32 Structure profile Principalprofile comprising the shelter structure 33 Structure anchoringMechanical-welding assembly that allows the structure to be attached tothe ground or to a vertical surface 34 Sliding tube assembly Assembly oftubes inserted in the canvas which slides into the structure profile dueto casters 35 Sliding tube Main tube of the sliding tube assembly 36Torsion absorber Smaller tube used to eliminate blocking caused bycertain kinds of twisting, by sliding inside the main tube 37 Threadedcap Small tips inserted in the ends of torsion absorbers. They contain athreaded insertion that allows casters to be tightened at the tips oftubes. 38 Caster Caster inserted in the structure profile which allowsthe canvas to slide 39 Caster screw Screw holding the caster in thethreaded caps 40 Large caster Larger caster which provides more play inthe structure profile which can compensate for absence of torsionabsorbers 41 Accordion canvas assembly Assembly of the accordion canvas42 Pulley Pulley that allows a cable pulled by a weight to automaticallyclose the canvas 43 Return weight Weight that applies a return force tothe canvas 44 Return elastic Elastics that can be sewn to the canvaswhich apply a constant force to close the canvas 45 Flexible curve rodFlexible rods that provide structure to the canvas flow curve 46 Guidetips Ring-shaped tips that act as a guide for the opening/closing of thecanvas by sliding on the steel cable 47 Canvas fastening tube Tubesinserted in the ends of the canvas that allow it to be attached so as toremain open 48 Canvas Canvas that holds the curve rods, attachment tubesas well as the sliding tubes 49 Attachment rods Main tube of theattachment tube assembly 50 Attachment tip Tips inserted in the ends ofthe fastening tube which allows it to be attached on the structure 51 SSCable assembly Assembly of steel cable and tensioner which acts as aguide for the canvas guide tips 52 Strip opening 20 Opening for screw 2153 Support opening 19 Opening for screw 21 54 Threaded opening of nut 18Threaded opening to attach screw 21 55 Support eyelet 19 Used to hangcoupling devices (hooks, snaphooks, screws, etc.)

Structure (23) and Unit Elements (32) of the Base Structure

Referring to FIG. 1, the self-supporting structure (23) is comprised ofprofiles (32) created through aluminum extrusion. The structure uses asingle profile to constitute its structure, the profile varies in lengthto accommodate the use desired (feet, beams, cross members,reinforcement, support). The profile (32) uses a square form comprisedof a central longitudinal groove (17) on each of the faces of theresulting extrusion. As illustrated in FIGS. 29 and 30, the groove (17)acts as a support element that can hold the options and assembliesanticipated as additions to the self-supporting structure (23), thelatter was developed specifically for this use. The groove (17)currently uses a T-insertion principle which allows the hardwaredeveloped with regard to the project to serve as support. Nevertheless,the necessary use of this groove does not limit its shape, differentprinciples of grooves could be used in the same way with a differentprofile, for example, those represented in FIG. 29.

The structure (23) is assembled with a corner principle (connectors)(25-26-27) which serve as attachment points between the main profiles(32) of the structure (23) (see, for example, FIGS. 1 to 6B, 8, 9, 11,16A to 19B, and 31). This mechanical-welding assembly of the connectorsmay be composed with the aluminum extrusion profiles (28) as illustratedin FIGS. 17A and 17B, in order to support the horizontal beams (supportmembers and cross members) (14) of the structure while fitting into thefeet (vertical rods) (15) of the structure (23). For example, assemblyof the connector (25-26-27) is hidden by an ornamental cube (29) whichalso maintains the cubic aesthetic of the structure (FIGS. 17A and 17B).The connector (25-26-27) is assembled so as to orient its rods (28) inthe X, Y and Z axial directions. The rods are then inserted in thecentre (16) of the main profile (32) of the structure 23). For example,as illustrated in FIG. 17A, threaded insertions (31) can be present ineach of the rods (28), which then allows a mechanical assembly of theprofiles to the connectors using a screw. Different variants ofconnectors were developed to allow connection of several structuresusing the same support point (foot). Versions or assemblies with 3 (25),4 (26) and 5 (27) branches have been developed to allow multiplearrangements.

The principal structure (23) comprises a very limited quantity of partswhich facilitates inventory management and manufacture. The profile andconnectors were developed so as to allow as many arrangements aspossible without any modification to the constituent parts, nocustomized or specialized manufacture is required for a particular typeof structural arrangement. The structures and the assemblies of theinvention are entirely modular. For example, structure members (supportand cross members) as well as feet (vertical rods) have an identicalprofile.

The structure is modular and can be used to support several objects, inparticular a canvas for shade and rain protection, as described in thepresent application. Other types of canvas are envisaged, e.g. a flat orsimple canvas for use as shelter against the sun (see for example FIG.10).

Description of the Canvas (41)

Referring now to FIGS. 1, 2, 7-9 and 11, the shade and rain protectioncanvas (41) can be easily installed on the structure (23) as an option.The canvas (41) is distinctive because of its particular shape which ischaracterized by pleats (8) and slopes (9) reminiscent of an accordionprinciple (see for example FIG. 20). Referring to FIG. 22, the canvascan be, e.g. structured in the frame by tubes (members of the firsttype) (35) with sliding casters (38) which are inserted in the uppertips (12) of the accordion as well as by flexible rods (members of thesecond type) (45) which are installed in the lower tips (13). Thisparticular provision provides the canvas with a certain rigidity andconsistency of shape. The sliding aspect of the canvas (41) allows it tobe opened and closed, providing flexibility of use. Bottom casters (38)slide in the groove (17) of the main extrusion profile (32) to allow theopening/closing movement (see FIG. 22). Referring to FIG. 14, theflexible rods (members of the second type) (45) inserted in the bottomtips (13) of the canvas (41) have guide tips (46) of eyelet type whichslide on a taut cable (or a guide) (51) so as to guide the canvas (41)and avoid twisting as much as possible during movement The flexible rodsinserted in the bottom tips also serve to structure the canvas (41) witha flow curve that guides water to the sides of the structure to preventaccumulation and ensure the structure is completely waterproof. FIG. 32Billustrates the distance (A) between two lower tips of the canvas, theheight (B) between an upper tip and a lower tip of the canvas (41), aswell as the angle (C) between the two slopes generated by a fold. FIG.33 illustrates the flow curve (D) which extends the entire width (E) ofthe canvas (41).

The canvas (41) can be entirely assembled and dismantled, it isassembled by inserting rigid tubes (35) and flexible rods (45) inpockets provided for this, to then be slid into the structure (23) whichrequires no dismantling. Since the project is based on a modularprinciple, options must be installable after assembly of the structure(41). The sliding principle of the canvas (41) could function followingother cable principles, such as weighted, or a crank system and benefitfrom a gutter system located at the ends of the bottom tips (13), whichredirects water there thanks to the flow curves created by the flexiblerods (45) to collect water.

Absorption Device (36)

Referring now to FIGS. 22 and 23, to allow for smooth opening/closing ofthe canvas (41), an “anti-twist” device was developed. This deviceoffers a margin of twisting which does not block sliding of the bottomcasters (38), if the canvas (41) has been operation in an uneven manner.The absorption principal is characterized, e.g. by sliding tubes (36) atthe ends of the bottom tubes (35) on which casters (38) are installedthrough threaded tips (37) and screws (39). These sliding tubes (36)allow the necessary extension of tubes (35) during twisting to avoid anyblockage (see in particular FIGS. 23A, 23B and 32C). The absorptiondevice, comprising elements 36 to 39, is installed on the canvas (41)prior to installation on the structure (23). One of the advantages ofthe absorption device is in its simplicity of assembly, low number ofparts and autonomous function which does not require particularmaintenance or use. Use of the product is intuitive for the user withsimple devices for use.

This absorption device can, according to a variant of the invention, bebased on one of the different mechanical principles, such as long screws(39) that would allow side movement of the casters (38) and would notrequire a sliding tube (36 a), as shown in FIGS. 24B and 24B.

Another principle explored with success was the use of larger casterswhich would offer more play once inserted into the groove of the mainprofile, as illustrated in FIGS. 25A and 25B.

Modularity

The very great modularity of the invention structures allows for thecreation of different varieties of shelters.

The concept starts with a base structure (23) which is the ALFAcomposition. This composition of tubular lengths (32) and connectors(25-26-27) is the basis of the shape and functionality of the project.

This composition of parts can create infinite lengths and differentgeometric forms. To obtain the desired final product adding the desiredoptions is sufficient Each connector piece (25-26-27) must havehomogeneous installation, i.e. they must be attached with the same boltsat the same level. For example, at the foot of a gazebo (33) which isattached to the ground, can also be installed on the horizontal beam(14) and attached to a wall (11). Some connectors of different shapescan be installed at any end of the structure and therefore extend thestructure itself in several different directions (see for example FIGS.11, 18A, 18B, 19A and 19B).

Each designed option must be easily installed on the structure (23) bothwith the initial installation and as a retrofit. This means permittinginstallation of a new option or a new type of roof on the basestructure, without altering the components of the structure (23) andeven without taking it apart. Each option and complementary accessory isdesigned with this purpose. Moreover, each option and each accessorymust advantageously be able to be shipped by courier and therefore mustbe maximized to reduce costs and complexity of installation for theconsumer. The product can be installed temporarily since it is veryquick to install and dismantle. It can also be installed permanently, inparticular because the product is of commercial quality.

The vertical and horizontal members [see, e.g. feet (15) and beams (14)]can be identical. Thus, the structure members, support members crossmembers and vertical rods can be used interchangeably. In fact, allthese parts can be identical and thus a given piece can be used eitheras a support member, or as a cross member or as a vertical rod.

Tension Mechanisms for the Retractable Canvas (41)

The retractable canvas (41) is comprised of a waterproof ornon-waterproof fabric, with aluminum rods as support The flexible rods(members of the second type) (45) in fibreglass provide shape and bodyto the canvas (41). The aluminum tubes (members of the first type) (34)have casters (38) at the ends and roll in the groove (17) of theextrusion (32). Opening and closing of the canvas can be done in severalways. As side curtains or side screens (6) (see, e.g. FIG. 31): to blockthe view or the wind or simply for aesthetics. Can be opened manually,automatically with a remote, or with a press button or controlled by acell phone or motor.

Operation can be manual: with one or two hands, the operator can detachthe canvas (41) and slide it (41) manually, as illustrated in FIG. 2, inwhich the canvas is in a folded position. With the anti-blocking system(36) the rods (support members) (35) do not have to be perfectly alignedin parallel. The rods will still slide. Several options are possible tokeep the canvas in the extended position. For example, attachment tubes(47) positioned at each end of the canvas can include a device, forexample hooks, to attach the canvas to the cross members. Hooks can beattached to fasteners that are described herein. Each fastener, beingattached in a groove of a cross member, is comprised of a support whichincludes an eyelet in which the hook has been inserted (e.g. see FIG.38—a hook or snaphook has been attached in an eyelet).

In another example, the attachment tube does not include a device but issecured to the cross members with a clip held by the fastener (22),which is in turn attached to the groove of the cross members (see forexample FIGS. 36 and 37).

Opening and closing by pulling or rolling a cable: For example,referring to FIG. 12, one or more cables (10) can be installed in thestructure (23), either by using the grooves of the profiles (17) or thecentre of the profiles (16) (see FIG. 30) to run the cable. An externalprinciple of the pulleys could also be added to the system and operatedusing counterweights (43) positioned inside profiles (32), grooves (17)or, again, exterior to the structure and/or springs (44) hidden or notin the structure (23) (see FIG. 13). The action of pulling or rolling acord can both open and close in the 2 cases.

Fastener (22)

With the goal of adapting several options to the structure (23)invention hardware was developed specially for the structure. Referringto FIGS. 26, 27 and 34 to 38, the attachment system (or means offastening) (22) is designed to adapt to all attachment and installationneeds and defines the shape of the principal profile (32) of thestructure (23). In the case of the retractable canvas (41), thefasteners (22) can act as supports for the guide cable tension system(51).

Fasteners can be comprised of an extrusion profile, for example with aright angle (19), which is installed outside of the groove (17) of theprincipal profile (32) and which acts as a support for theoptions/accessories. For example, the fastener (3) can include a notch(5) to hold and support an object, such as an attachment member (47) ofa canvas (FIGS. 35 to 37). For example, it is possible to insert a nutwasher (4) between the screw and the nut (FIG. 35B). For example, thefastener (22) can include an eyelet (55) in which can be inserted acoupling element, e.g. a hook which can be connected to the canvas inorder to support a flat canvas (FIG. 38).

This support is maintained by the T-nut (18) which is inserted insidethe groove (17) (see FIG. 27A) and, once the assembly (means ofattachment) (22) is screwed, makes a one-quarter turn to become blockedin the groove (17), providing pressure which fixes it in place while thescrew is tightened (see FIG. 27B). The nut (18) includes a serratedsurface allowing engagement by friction with an object to be fastened bythe means of attachment The support (19) includes a serrated surfaceallowing frictional engagement with an object to be fastened by means ofthe attachment FIGS. 34A and 27B illustrate more particularly theproportions of the nut (18) next to a groove in a profile (32). The nut(18) is of a generally rectangular shape and has four corners. Twocorners connected by a first diagonal are rounded and two cornersconnected by a second diagonal form right angles. The first diagonalincludes a length G which is less than the second diagonal. Thedimensions of the nut allow insertion in the groove, between the twoedges of the groove (acting as retaining lips for the screw), since oneof its sides is narrow, of a smaller dimension than the distance betweenthe two edges. The groove comprises a width F which has a dimensionapproximately similar to the longest side H of the nut, greater than thelength of the first diagonal connecting the rounded corners G but lessthan the length of the second diagonal connecting the right-anglecorners. Thus the nut can be turned no more than 90 degrees only in onedirection and then becomes blocked in the groove. The nut is thenblocked since the length H prevents additional rotating due to its sizeand the nut is therefore blocked by frictional engagement with thegroove.

The advantage gained by this principle is the possibility of insertingfasteners (22) (means of attachment) in the groove (17) of the structure(23) without the latter being disassembled.

For example, fasteners can be inserted in the grooves of the supportmembers, cross members, as well as the vertical rods. Moreover, there isno need to screw anything at all directly into the profile (i.e. asupport/cross member or a vertical rod).

The fastener (22) is also equipped with an anti-rotation strip (20)which allows it to stay parallel to the groove (17) at all times,thereby avoiding sliding from starting. The anti-rotation strip (20)includes one central part and at least one fin, preferably two finslocated on both sides of the central part, forming a 90-degree anglewith the central part The fins are next to the two side parts of thesupport, as illustrated in FIGS. 26A and 26B.

Upon installation of the means of attachment (22) in groove (17), themeans of attachment (22) is pre-assembled, meaning that the screw (21)is inserted in the opening (52) of the strip (20), then in the opening(53) of the support (19) and finally in the threaded opening (54) of thenut (18). The nut (18) and a part of the screw (21) are then inserted inthe groove (17) by placing the nut (18) parallel to the direction of thegroove (17) (see FIG. 27A). The screw is then tightened, whichpotentially caused the 90-degree rotation of the nut which has tightenedthe lips or edges of the groove (17) (see FIG. 27B). A user may easilydo all this and installation does not necessarily require the use of twohands by the user. Indeed, the user can then fasten an attachment (22)in a groove (17) without being obliged to insert fingers into the grooveor being obliged to insert another object to hold the attachment (22)during installation since the configuration of the fastener allows theuser to use one hand to quickly install it by making a single quarterturn (90-degree rotation) in order to fasten the attachment (22) to theends of the groove (17). The configuration of the attachment (22) iscalled “quick fit”.

Several varieties of fasteners (22) providing the same function areenvisaged: nut without rotation which must be inserted by the ends ofthe structure profiles or permanent hardware requiring a piercing of thestructure profiles.

For example, fastener (22) may be used to attach guide cables. In thiscase, it is possible to attach two fasteners (22) in the grooves of thefeet of the structure (or vertical rods) at a height corresponding tothat of the bottom tips of the canvas.

For example, two fasteners can be attached in the grooves of thestructure fee (or vertical rods) at a desired height in order to installa device to hold a curtain support.

Referring again to FIG. 26, several types of screws (21) are envisaged.The screw has a threaded rod (not indicated in FIG. 26B) and a head, forexample a head comprising a six-sided opening (for an Allen key).

Motorization: With the help of a motor, closing and opening of the roofand/or side curtains can be done by a manual switch, remote control orcell phone applications.

Possible Variations of the Principal Profile of the Structure

The principal extrusion profile of the structure (32) was developed aspart of the project to permit adaptation to different needs of theproject Its symmetrical form is justified by the modular aspect which isrequired of the structure (23), like the insertion grooves (17) whichare present on each face. However, while the current profile fulfils itsrequirements, it could still have different shapes which would respondto the needs of the structure (23).

The centre of the extrusion (16) currently uses a square shape whichholds the connector rods (28), its form is defined by that of theconnectors (25-26-27). However, the connectors could use circularbranches (28), thereby causing the centre of the profile (16) to have acircular or other shape, as illustrated in FIG. 29.

Referring again to FIG. 29, the groove (17) on each face of the profile(32) can also be subject to different variations in size, proportionsand even form. Since this form acts as a support to the fasteners (22)its form depends on that of the T-nuts (18) which can also change. Theprimary aspect of the groove are the edges which act as retaining lipsfor the nut (18) as well as its opening, which must allow for the latterto be inserted. However, the dimensions and proportions of the groove(17) and their edge can change yet maintain their function, certainaspects of the groove (17) such as the bevels or the rectangular shapecan also be modified as long as the retaining edges are still present.

Various aspects of the extrusion (32) were established according totechnical or manufacturing constraints or for solidity or the price ofraw materials. Therefore, certain thicknesses could vary toincrease/reduce solidity and manufacturing costs, the shape of cornerscould also change to accommodate certain equipment The profile principalis based on its functioning not its shape and dimensions.

This invention was described above in reference to a preferred mode ofcreation of the invention. Of course, the production which has just beendescribed is only for the purposes of illustration and is in no caserestrictive, various modifications can be made to the different objectsof which it is comprised without going beyond the scope of thisinvention.

1. Accordion-type folding canvas comprising: a plurality of members of afirst type, said members to be inserted into said canvas, said membersof the first type comprising, at each end, a means for sliding or movingto be inserted into a structure, the said members of said first typehaving a sliding device so as to be able to modify their length duringsaid sliding or movement, in this way preventing blocking, a pluralityof members of a second type, said members to be inserted into saidcanvas, said members of the second type being flexible so as to allowformation of a flow curve when said canvas is in an extended position.two attachment members, to be inserted into said canvas and located onthe ends of the canvas, said attachment members comprising a deviceallowing maintain said canvas in a deployed position, said members ofthe first type and said members of the second type to be alternatelyarranged, in parallel, when they are inserted in the canvas, so as toform an “accordion” configuration, when the canvas is in a folded orextended position, said attachment members replacing said members of thesecond type in alternation at said ends of the canvas.
 2. Accordion-typefolding canvas comprising: a plurality of members of a first type, saidmembers to be inserted into said canvas, said members of the first typecomprising, at each end, a means for moving to be inserted into astructure, the said members of said first type having a sliding deviceso as to be able to modify their length during said movement, aplurality of members of a second type, said members to be inserted intosaid canvas, said members of the second type being flexible so as toallow formation of a flow curve, two attachment members, to be insertedinto said canvas and located on the ends of the canvas, said attachmentmembers to be attached in a fixed manner to a structure in order tomaintain said canvas in a deployed position, and said members of thefirst type and said members of the second type to be alternatelyarranged in parallel when they are inserted in the canvas, so as to forman “accordion” configuration.
 3. Folding canvas according to claim 2, inwhich said attachment members replace said members of the first type orsecond type in alternation at said ends of the canvas.
 4. Canvasaccording to claim 1, in which said members of said first type are uppermembers and said members of said second type are lower members. 5.Canvas according to claim 1, in which said sliding device includes twocylinders, inserted one into the other.
 6. Canvas according to claim 1,in which said sliding device includes two cylinders, inserted one intothe other so that, if one end of one of said members of the first typeis moved in an uneven fashion at its opposite end in relation to saidstructure during movement of the canvas in relation to said structure,said member of the first type will get longer thanks to said slidingdevice, thereby preventing blockage during movement of said canvas. 7.Canvas according to claim 1, in which said means of sliding or movementinclude casters.
 8. Canvas according to claim 1, in which said membersof said second type are connected together by at least one guide, to oneof said ends of said members of said second type, at least one of saidguides being arranged in a fashion generally perpendicular to saidmembers of said second type.
 9. Canvas according to claim 8, in whichsaid members of said second type are connected together by two guides,one at each of said ends.
 10. Canvas according to claim 9, in which saidguides are cables inserted into eyelets located on said ends of saidmembers of said second type.
 11. Structure comprising: a canvas asdefined in claim 1; and at least two support members, said supportmembers each comprising at least one groove to receive said means ofsliding or moving of said members of the first type of said canvas inorder to maintain said canvas and allow it to move between a foldedposition and an extended position.
 12. Structure according to claim 11,in which said support members comprise two support members connectedtogether by two cross members in a fashion generally parallel to saidmembers of the first and second type, said support members and saidcross members forming a frame that maintains the canvas.
 13. Structureaccording to claim 12, which also comprises at least two vertical rodsallowing retention of said frame and said canvas at a desired height.14. Structure according to claim 1, in which said cross members eachinclude at least one groove.
 15. Structure according to claim 1, inwhich said cross members each include at least one groove.
 16. Structureaccording to claim 14, in which at least the two of said support membersare interchangeable with said cross members.
 17. Structure according toclaim 15, in which at least the two of said support members areinterchangeable with said cross members or with at least two of saidvertical rods.
 19. Structure according to claim 1 in which said supportmembers, said cross members and said vertical rods are to be connectedtogether using connectors, said connectors containing branches to beinserted into cavities of said support members, said cross membersand/or said vertical rods, said connectors to be located at the cornersof said frame and sized so that the branches are hidden inside saidsupport members, said cross members and/or said vertical rods when theyare inserted into them.
 20. Structure according to claim 19, in whichsaid connectors have three branches, one branch being positionedvertically and two branches being positioned horizontally, saidhorizontal branches forming a 90-degree angle between them and with saidvertical branch. 21-72. (canceled)